<template>
  <div>
    a
  </div>
</template>
<script>
export default {

  created() {
    console.log('a --- created');
  },
  activated() {
    console.log('a --- 被激活了');
  },
  deactivated() {
    console.log('a --- 失活');
  }
}
</script>
<style>
  
</style>